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Liability for Employee Rights Upon Retirement (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Liability for Employee Rights Upon Retirement [Abstract] |  |  |  |
Monthly deposits rate | 8.33% |  | 8.33% |
Employee benefits | $ 12 | $ 10 | $ 33 | $ 35

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- Definition The percentage of salary the monthly deposit rate is set at. + References No definition available. + Details
Name: | aiff_MonthlyDepositRatePercentOfSalary
Namespace Prefix: | aiff_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Amount of expense for employee benefit and equity-based compensation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_EmployeeBenefitsAndShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_GeneralDiscussionOfPensionAndOtherPostretirementBenefitsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration